Sonic vs Ultrasonic Toothbrush (Which is Better?)

There are a number of electric toothbrushes that operate on Sonic technology such as the Sonicare VS Oral B range. However, there are also electric toothbrushes based on Ultrasonic technology. You might be wondering what the differences between toothbrushes made based on sonic vs ultrasonic technology. We explore the differences below.

Best Sonic vs Ultrasonic Electric Toothbrush

What is the Difference Between Sonic vs Ultrasonic Electric Toothbrushes?

  • The main difference between Sonic vs Ultrasonic revolves around the bristles movements made when in use. To be categorized as a sonic toothbrush, the movement or maybe vibration out of the brush needs to be fast enough to create a’ humming’ sound that’s in the audible selection of the human ear (twenty Hz to 20,000 Hz). Sonic brushes typically offer 12,000 to 24,000 oscillations or 24,000 48,000 movements per minute.
  • Meanwhile Ultrasonic toothbrushes, unlike sonic types, don’t depend on an actual movement to thoroughly clean teeth.
  • An ultrasonic toothbrush utilizes an extremely high frequency of vibration called ultrasound to remove bacteria and plaque from the tooth. To be classified as such, the brush must emit a trend of a minimum of 20,000Hz or maybe 2,400,000 movements per minute, significantly much more than the extremely popular sonic technology.
  • Sonic brushes count on a sweeping motion by itself to clean up the teeth, the motion which they offer is usually excessive in amplitude and that means they provide larger sweeping brush stroke motions. It’s the bristles on the brush head that move at this particular pace to essentially brush out food particles along with bacteria which remain on the tooth plus gum line. Instances associated with a sonic brush include Oral-B’s range of electric-powered brushes along with Philips Sonicare range.
  • On the other hand ultrasonic toothbrushes use high frequency ultrasound instead of the activity on the brush head to remove bacteria and debris. A Japanese study found that the high ultrasound frequency broke down bacteria chains that cause plaque in the teeth along the gum line. The higher frequency waves, but lacking in amplitude would mean the bacterial chains present in the jaws which constitute plaque are broken in place with the vibrations allowing it to work as much as 5mm below the gumline. Essentially talking the brush is able to clean the teeth merely by resting the brush on it. The Food  Drug Association in the USA (FDA) actually establish a minimum of 1.6MHz or maybe 192,000,000 movements a minute before issuing a licence for ultrasonic toothbrushes.
  • An ultrasonic brush when compared with the more normally seen and also used sonic brushes doesn’t require an actual movement to thoroughly clean tooth surfaces and also gumline.
  • In recent times, ultrasonic brushes also integrate extra sonic vibration ranging from 9,000 to 40,000 movements per second, to provide extra sweeping motion which purges bacterial chain and food particles remnants.

A good example of an ultrasonic brush will be the Megasonex.

What’s An Ultrasonic Toothbrush?

Whilst ultrasonic toothbrushes are made on a small scale to work, the market is dominated by sonic toothbrushes. Ultrasonic toothbrushes are based on ultrasound technology. The ultrasound technology (in a toothbrush) is achieved by producing a good wave at a frequency of 1.6MHz with a power rating that does not increase the surface temperature of the teeth or even adjacent tissue by over one degree C. The ultrasound technology has had accreditation status by the FDA in the USA since 1992. 

The 1.6MHz  frequency of ultrasound is verified to be extremely effective not just in fighting dental plaque but additionally in managing canker sores, decreasing the time needed for bones to cure and raising the pace of recovery of lacerations among other things. One of the most popular brands of ultrasonic toothbrushes is .

There are few manufacturers that do make true ultrasonic brushes, these are: Megasonex, Emmi-Dent and Smilex.

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Last update on 2024-06-23 / Affiliate links / Images from Amazon Product Advertising API

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